$ git clone -n https://src.fedoraproject.org/rpms/ghc-Decimal.git /var/lib/mock/f40-build-775909-128499/root/chroot_tmpdir/scmroot/ghc-Decimal
Cloning into '/var/lib/mock/f40-build-775909-128499/root/chroot_tmpdir/scmroot/ghc-Decimal'...
$ git fetch origin db73f71115ddb5cb7ec613decbbb08a8e895796f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-Decimal
 * [new ref]         db73f71115ddb5cb7ec613decbbb08a8e895796f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at db73f71 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild