$ git clone -n https://src.fedoraproject.org/rpms/perl-Array-Base.git /var/lib/mock/f45-build-21777-588/root/chroot_tmpdir/scmroot/perl-Array-Base
Cloning into '/var/lib/mock/f45-build-21777-588/root/chroot_tmpdir/scmroot/perl-Array-Base'...
$ git fetch origin 7bb897b7095d284eb39915568acb259ea842cf80:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Array-Base
 * [new ref]         7bb897b7095d284eb39915568acb259ea842cf80 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7bb897b Perl 5.44 rebuild