$ git clone -n https://src.fedoraproject.org/rpms/plymouth-theme-breeze.git /var/lib/mock/f40-build-2106003-50591/root/chroot_tmpdir/scmroot/plymouth-theme-breeze
Cloning into '/var/lib/mock/f40-build-2106003-50591/root/chroot_tmpdir/scmroot/plymouth-theme-breeze'...
$ git fetch origin 1f3c974e2e255b5cd95d656b3ee9662f32cc965c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plymouth-theme-breeze
 * [new ref]         1f3c974e2e255b5cd95d656b3ee9662f32cc965c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1f3c974 fix: upload missing sources