$ git clone -n https://src.fedoraproject.org/rpms/perl-libwhisker2.git /var/lib/mock/f45-build-27666-625/root/chroot_tmpdir/scmroot/perl-libwhisker2
Cloning into '/var/lib/mock/f45-build-27666-625/root/chroot_tmpdir/scmroot/perl-libwhisker2'...
$ git fetch origin 3d05a14d79ca2cd0035ba228e42834a549a60edf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-libwhisker2
 * [new ref]         3d05a14d79ca2cd0035ba228e42834a549a60edf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3d05a14 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild