$ git clone -n https://src.fedoraproject.org/rpms/gap-pkg-semigroups.git /var/lib/mock/f38-build-side-42-init-devel-711126-27245/root/chroot_tmpdir/scmroot/gap-pkg-semigroups
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-711126-27245/root/chroot_tmpdir/scmroot/gap-pkg-semigroups'...
$ git fetch origin 3542f8953777ad60461c6ab244b159f4ca817c35:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gap-pkg-semigroups
 * [new ref]         3542f8953777ad60461c6ab244b159f4ca817c35 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3542f89 Version 5.2.1.