$ git clone -n https://src.fedoraproject.org/rpms/perl-File-ConfigDir.git /var/lib/mock/f45-build-23467-597/root/chroot_tmpdir/scmroot/perl-File-ConfigDir
Cloning into '/var/lib/mock/f45-build-23467-597/root/chroot_tmpdir/scmroot/perl-File-ConfigDir'...
$ git fetch origin 19dc3487e20d05395ac9f33a531c79d14881d0c3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-File-ConfigDir
 * [new ref]         19dc3487e20d05395ac9f33a531c79d14881d0c3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 19dc348 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild