$ git clone -n https://src.fedoraproject.org/rpms/perl-Sendmail-PMilter.git /var/lib/mock/f40-build-2630052-65621/root/chroot_tmpdir/scmroot/perl-Sendmail-PMilter
Cloning into '/var/lib/mock/f40-build-2630052-65621/root/chroot_tmpdir/scmroot/perl-Sendmail-PMilter'...
$ git fetch origin bec27e2912ab443b25f8ff5085737784e0a4b992:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Sendmail-PMilter
 * [new ref]         bec27e2912ab443b25f8ff5085737784e0a4b992 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bec27e2 Update to 1.27