$ git clone -n https://src.fedoraproject.org/rpms/perl-Shell-Config-Generate.git /var/lib/mock/f45-build-26213-616/root/chroot_tmpdir/scmroot/perl-Shell-Config-Generate
Cloning into '/var/lib/mock/f45-build-26213-616/root/chroot_tmpdir/scmroot/perl-Shell-Config-Generate'...
$ git fetch origin 71d75322effe69d70ed00b529302a145e4b42817:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Shell-Config-Generate
 * [new ref]         71d75322effe69d70ed00b529302a145e4b42817 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 71d7532 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild