$ git clone -n https://src.fedoraproject.org/rpms/libgpiod.git /var/lib/mock/f42-build-side-1-3497628-45961/root/chroot_tmpdir/scmroot/libgpiod
Cloning into '/var/lib/mock/f42-build-side-1-3497628-45961/root/chroot_tmpdir/scmroot/libgpiod'...
$ git fetch origin a38a1ea802a4a1cda8fe66b0ea1bc2408ab54408:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libgpiod
 * [new ref]         a38a1ea802a4a1cda8fe66b0ea1bc2408ab54408 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a38a1ea Fix scriptlets for service enablement