$ git clone -n https://src.fedoraproject.org/rpms/BibTool.git /var/lib/mock/f42-build-881953-184120/root/chroot_tmpdir/scmroot/BibTool
Cloning into '/var/lib/mock/f42-build-881953-184120/root/chroot_tmpdir/scmroot/BibTool'...
$ git fetch origin de8733c064c3e5847ff7611d03669f8154bc52a5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/BibTool
 * [new ref]         de8733c064c3e5847ff7611d03669f8154bc52a5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at de8733c Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild