$ git clone -n https://src.fedoraproject.org/rpms/perl-Config-Extend-MySQL.git /var/lib/mock/f45-build-22467-591/root/chroot_tmpdir/scmroot/perl-Config-Extend-MySQL
Cloning into '/var/lib/mock/f45-build-22467-591/root/chroot_tmpdir/scmroot/perl-Config-Extend-MySQL'...
$ git fetch origin 6b6cf2f6a7d75dd511619c9d6be716fc5cc4579f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Config-Extend-MySQL
 * [new ref]         6b6cf2f6a7d75dd511619c9d6be716fc5cc4579f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6b6cf2f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild