$ git clone -n https://src.fedoraproject.org/rpms/rust-gimoji.git /var/lib/mock/f38-build-side-42-init-devel-1089024-30041/root/chroot_tmpdir/scmroot/rust-gimoji
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1089024-30041/root/chroot_tmpdir/scmroot/rust-gimoji'...
$ git fetch origin 1836f25b5700b65ccd912c99b0e6421188778dac:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gimoji
 * [new ref]         1836f25b5700b65ccd912c99b0e6421188778dac -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1836f25 Update to version 0.5.1