$ git clone -n https://src.fedoraproject.org/rpms/libunibreak.git /var/lib/mock/f40-build-785522-133989/root/chroot_tmpdir/scmroot/libunibreak
Cloning into '/var/lib/mock/f40-build-785522-133989/root/chroot_tmpdir/scmroot/libunibreak'...
$ git fetch origin 03ca098d311e554fc3386af7f649b7ccb0fdecde:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libunibreak
 * [new ref]         03ca098d311e554fc3386af7f649b7ccb0fdecde -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 03ca098 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild