$ git clone -n https://src.fedoraproject.org/rpms/perl-File-chdir.git /var/lib/mock/f45-build-23601-598/root/chroot_tmpdir/scmroot/perl-File-chdir
Cloning into '/var/lib/mock/f45-build-23601-598/root/chroot_tmpdir/scmroot/perl-File-chdir'...
$ git fetch origin d6b20289489f118de9f12afae5cfb75cf13e9275:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-File-chdir
 * [new ref]         d6b20289489f118de9f12afae5cfb75cf13e9275 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d6b2028 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild