$ git clone -n https://src.fedoraproject.org/rpms/icu4j.git /var/lib/mock/f41-build-766302-13472/root/chroot_tmpdir/scmroot/icu4j
Cloning into '/var/lib/mock/f41-build-766302-13472/root/chroot_tmpdir/scmroot/icu4j'...
$ git fetch origin f25bcc96cec379f34debea08d875221f94dca4c3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/icu4j
 * [new ref]         f25bcc96cec379f34debea08d875221f94dca4c3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f25bcc9 Version 75.1