$ git clone -n https://src.fedoraproject.org/rpms/perl-lib-abs.git /var/lib/mock/f45-build-27669-625/root/chroot_tmpdir/scmroot/perl-lib-abs
Cloning into '/var/lib/mock/f45-build-27669-625/root/chroot_tmpdir/scmroot/perl-lib-abs'...
$ git fetch origin 9ee6cb7003e4fb52e855fe90b304b76a88eac325:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-lib-abs
 * [new ref]         9ee6cb7003e4fb52e855fe90b304b76a88eac325 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9ee6cb7 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild