$ git clone -n https://src.fedoraproject.org/rpms/perl-Lingua-Stem-Snowball.git /var/lib/mock/f45-build-24584-604/root/chroot_tmpdir/scmroot/perl-Lingua-Stem-Snowball
Cloning into '/var/lib/mock/f45-build-24584-604/root/chroot_tmpdir/scmroot/perl-Lingua-Stem-Snowball'...
$ git fetch origin 8e37decf95de36062a7f4db069f47f4bb614862b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Lingua-Stem-Snowball
 * [new ref]         8e37decf95de36062a7f4db069f47f4bb614862b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8e37dec Perl 5.44 rebuild