$ git clone -n https://src.fedoraproject.org/rpms/perl-Config-Model.git /var/lib/mock/f39-build-1441612-32395/root/chroot_tmpdir/scmroot/perl-Config-Model
Cloning into '/var/lib/mock/f39-build-1441612-32395/root/chroot_tmpdir/scmroot/perl-Config-Model'...
$ git fetch origin 8655cb1b25c93da07a3923e94861ec6d672f13ea:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Config-Model
 * [new ref]         8655cb1b25c93da07a3923e94861ec6d672f13ea -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8655cb1 2.153 bump (rhbz#2224540)