$ git clone -n https://src.fedoraproject.org/rpms/libosmium.git /var/lib/mock/f39-build-2426188-60579/root/chroot_tmpdir/scmroot/libosmium
Cloning into '/var/lib/mock/f39-build-2426188-60579/root/chroot_tmpdir/scmroot/libosmium'...
$ git fetch origin 5055bda388524873d9dd7c447a5ec6728fe52fa1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libosmium
 * [new ref]         5055bda388524873d9dd7c447a5ec6728fe52fa1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5055bda Update to 2.20.0 upstream release