$ git clone -n https://src.fedoraproject.org/rpms/snowcrash.git /var/lib/mock/f40-build-796686-140843/root/chroot_tmpdir/scmroot/snowcrash
Cloning into '/var/lib/mock/f40-build-796686-140843/root/chroot_tmpdir/scmroot/snowcrash'...
$ git fetch origin b3690b4fe913895bd22bd104b0f853dc10748c9e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/snowcrash
 * [new ref]         b3690b4fe913895bd22bd104b0f853dc10748c9e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b3690b4 Rebuild for golang 1.22.0