$ git clone -n https://src.fedoraproject.org/rpms/rust-devicemapper.git /var/lib/mock/f40-build-2183051-51244/root/chroot_tmpdir/scmroot/rust-devicemapper
Cloning into '/var/lib/mock/f40-build-2183051-51244/root/chroot_tmpdir/scmroot/rust-devicemapper'...
$ git fetch origin 1ba1d78e3c00909c490e5d80d72131ddba244354:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-devicemapper
 * [new ref]         1ba1d78e3c00909c490e5d80d72131ddba244354 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1ba1d78 Update to version 0.34.0