$ git clone -n https://src.fedoraproject.org/rpms/librem.git /var/lib/mock/f38-build-side-42-init-devel-1392300-30890/root/chroot_tmpdir/scmroot/librem
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1392300-30890/root/chroot_tmpdir/scmroot/librem'...
$ git fetch origin 146e166d26d324bf35106e60228f4b38aa231da8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/librem
 * [new ref]         146e166d26d324bf35106e60228f4b38aa231da8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 146e166 Upgrade to 2.12.0 (#2170481)