$ git clone -n https://src.fedoraproject.org/rpms/perl-Text-vFile-asData.git /var/lib/mock/f45-build-27229-621/root/chroot_tmpdir/scmroot/perl-Text-vFile-asData
Cloning into '/var/lib/mock/f45-build-27229-621/root/chroot_tmpdir/scmroot/perl-Text-vFile-asData'...
$ git fetch origin 0954e2fb64d4d9e91078e9dea8d41b0dbe916dc5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Text-vFile-asData
 * [new ref]         0954e2fb64d4d9e91078e9dea8d41b0dbe916dc5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0954e2f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild