$ git clone -n https://src.fedoraproject.org/rpms/fastfetch.git /var/lib/mock/f40-build-2055015-49105/root/chroot_tmpdir/scmroot/fastfetch
Cloning into '/var/lib/mock/f40-build-2055015-49105/root/chroot_tmpdir/scmroot/fastfetch'...
$ git fetch origin 3adf6fad6b3d6d556538b11f08634c858e48a80f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fastfetch
 * [new ref]         3adf6fad6b3d6d556538b11f08634c858e48a80f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3adf6fa update to 2.3.4