$ git clone -n https://src.fedoraproject.org/rpms/rust-relm4-components.git /var/lib/mock/f41-build-side-1-3004341-36701/root/chroot_tmpdir/scmroot/rust-relm4-components
Cloning into '/var/lib/mock/f41-build-side-1-3004341-36701/root/chroot_tmpdir/scmroot/rust-relm4-components'...
$ git fetch origin 5ac9d4faca218201d040a1b343403c171e8da08a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-relm4-components
 * [new ref]         5ac9d4faca218201d040a1b343403c171e8da08a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5ac9d4f Update to 0.9.1 (fedora#2314220)