$ git clone -n https://src.fedoraproject.org/rpms/gnome-chemistry-utils.git /var/lib/mock/f38-build-side-42-init-devel-596786-26162/root/chroot_tmpdir/scmroot/gnome-chemistry-utils
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-596786-26162/root/chroot_tmpdir/scmroot/gnome-chemistry-utils'...
$ git fetch origin b455f1467481f9e1650cdc9dbd6ef49d1720b7b5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnome-chemistry-utils
 * [new ref]         b455f1467481f9e1650cdc9dbd6ef49d1720b7b5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b455f14 Rebuild for gnumeric-1.12.55