$ git clone -n https://src.fedoraproject.org/rpms/ibus-typing-booster.git /var/lib/mock/f43-build-59041223-6570547/root/chroot_tmpdir/scmroot/ibus-typing-booster
Cloning into '/var/lib/mock/f43-build-59041223-6570547/root/chroot_tmpdir/scmroot/ibus-typing-booster'...
$ git fetch origin 1fc873879d18d317b61d437779572f08b9864033:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ibus-typing-booster
 * [new ref]         1fc873879d18d317b61d437779572f08b9864033 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1fc8738 Update to 2.27.38