$ git clone -n https://src.fedoraproject.org/rpms/rubygem-bcrypt.git /var/lib/mock/f40-build-2232646-53341/root/chroot_tmpdir/scmroot/rubygem-bcrypt
Cloning into '/var/lib/mock/f40-build-2232646-53341/root/chroot_tmpdir/scmroot/rubygem-bcrypt'...
$ git fetch origin 24399553cb2c17e3a9684741bb039f1c1e5d91c6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-bcrypt
 * [new ref]         24399553cb2c17e3a9684741bb039f1c1e5d91c6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2439955 Rebuilt for https://fedoraproject.org/wiki/Changes/Ruby_3.3