$ git clone -n https://src.fedoraproject.org/rpms/perl-Env-C.git /var/lib/mock/f40-build-779877-130508/root/chroot_tmpdir/scmroot/perl-Env-C
Cloning into '/var/lib/mock/f40-build-779877-130508/root/chroot_tmpdir/scmroot/perl-Env-C'...
$ git fetch origin 3516d11c4e1753a44c607af6001b160762a5e913:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Env-C
 * [new ref]         3516d11c4e1753a44c607af6001b160762a5e913 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3516d11 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild