$ git clone -n https://src.fedoraproject.org/rpms/perl-GSSAPI.git /var/lib/mock/f41-build-817010-150570/root/chroot_tmpdir/scmroot/perl-GSSAPI
Cloning into '/var/lib/mock/f41-build-817010-150570/root/chroot_tmpdir/scmroot/perl-GSSAPI'...
$ git fetch origin e9db8c1dba5c10131cd18bab6ef44b1fa00095a5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-GSSAPI
 * [new ref]         e9db8c1dba5c10131cd18bab6ef44b1fa00095a5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e9db8c1 Perl 5.40 rebuild