$ git clone -n https://src.fedoraproject.org/rpms/gap-pkg-caratinterface.git /var/lib/mock/f38-build-side-42-init-devel-576512-26000/root/chroot_tmpdir/scmroot/gap-pkg-caratinterface
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-576512-26000/root/chroot_tmpdir/scmroot/gap-pkg-caratinterface'...
$ git fetch origin 7830716dc6a7bbce78b9375a430b718439a36387:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gap-pkg-caratinterface
 * [new ref]         7830716dc6a7bbce78b9375a430b718439a36387 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7830716 Version 2.3.5