$ git clone -n https://src.fedoraproject.org/rpms/libdv.git /var/lib/mock/f42-build-883296-185158/root/chroot_tmpdir/scmroot/libdv
Cloning into '/var/lib/mock/f42-build-883296-185158/root/chroot_tmpdir/scmroot/libdv'...
$ git fetch origin b3930b91bb7ad6bd032265a0853c9c2e70e084c3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libdv
 * [new ref]         b3930b91bb7ad6bd032265a0853c9c2e70e084c3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b3930b9 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild